package com.kuang.entity;

import java.util.HashMap;

public class Test01 {
    
    public void getUser(User user){
        System.out.println("user=====");
    }
    public  void getUser(Product product){
        System.out.println("product");
    }

    public static void main(String[] args) {
        HashMap<Object, Object> hashMap = new HashMap<>();
        hashMap.put("a","1");
        hashMap.put("b","2");
        hashMap.put("c","3");
        hashMap.put("d","4");
        hashMap.put("e","5");
        hashMap.put("f","6");
        hashMap.put("g","7");
        hashMap.put("h","8");
        hashMap.put("i","9");
        hashMap.put("j","10");
        hashMap.put("k","11");
        hashMap.put("l","12");
        hashMap.put("m","13");
        hashMap.put("n","14");
        hashMap.put("o","15");
        hashMap.put("p","16");

        System.out.println("aaaaa"+10%15);
        System.out.println((10) & 15);
    }
    
}
